package com.peng.controller;

import com.alibaba.fastjson.JSONObject;
import com.peng.exception.YyghException;
import com.peng.helper.JwtHelper;
import com.peng.result.Result;
import com.peng.result.ResultCodeEnum;
import com.peng.service.UserInfoService;
import com.peng.utils.ConstantPropertiesUtil;
import com.peng.utils.HttpClientUtils;
import com.peng.yygh.model.user.UserInfo;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.servlet.http.HttpSession;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;

@Controller
@RequestMapping("/api/ucenter/wx")
@Slf4j
public class WeixinApiController {

    @Autowired
    private UserInfoService userInfoService;
    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 获取微信登录参数
     */
    @GetMapping("getLoginParam")
    @ResponseBody
    public Result genQrConnect(HttpSession session) throws UnsupportedEncodingException {
        String redirectUri = URLEncoder.encode(ConstantPropertiesUtil.WX_OPEN_REDIRECT_URL, "UTF-8");
        Map<String, Object> map = new HashMap<>();
        map.put("appid", ConstantPropertiesUtil.WX_OPEN_APP_ID);
        map.put("redirectUri", redirectUri);
        map.put("scope", "snsapi_login");
        map.put("state", System.currentTimeMillis()+"");//System.currentTimeMillis()+""
        return Result.ok(map);
    }
    /**
     * 微信登录回调
     *
     * @param code
     * @param state
     * @return
     */
    @RequestMapping("callback")
    public String callback(String code, String state) {
        System.out.println("code->"+code);
        if (StringUtils.isEmpty(state) || StringUtils.isEmpty(code)) {
            log.error("非法回调请求");
            throw new YyghException(ResultCodeEnum.ILLEGAL_CALLBACK_REQUEST_ERROR);
        }
        //使用code和appid以及appscrect换取access_token
        StringBuffer baseAccessTokenUrl = new StringBuffer()
                .append("https://api.weixin.qq.com/sns/oauth2/access_token")
                .append("?appid=%s")
                .append("&secret=%s")
                .append("&code=%s")
                .append("&grant_type=authorization_code");
        String format = String.format(baseAccessTokenUrl.toString(), ConstantPropertiesUtil.WX_OPEN_APP_ID, ConstantPropertiesUtil.WX_OPEN_APP_SECRET, code);
        try {
            String s = HttpClientUtils.get(format);
            JSONObject resultJson = JSONObject.parseObject(s);
            if(resultJson.getString("errcode") != null){
                log.error("获取access_token失败：" + resultJson.getString("errcode") + resultJson.getString("errmsg"));
                throw new YyghException(ResultCodeEnum.FETCH_ACCESSTOKEN_FAILD);
            }
            String access_token = resultJson.getString("access_token");
            String openid = resultJson.getString("openid");
            //根据access_token获取微信用户的基本信息
            //先根据openid进行数据库查询
            // UserInfo userInfo = userInfoService.getByOpenid(openId);
            // 如果没有查到用户信息,那么调用微信个人信息获取的接口
            // if(null == userInfo){
            //如果查询到个人信息，那么直接进行登录
            //使用access_token换取受保护的资源：微信的个人信息
            UserInfo userInfo = userInfoService.getByOpenid(openid);
            if (userInfo==null){
                String baseUserInfoUrl = "https://api.weixin.qq.com/sns/userinfo" +
                        "?access_token=%s" +
                        "&openid=%s";
                String userInfoUrl = String.format(baseUserInfoUrl.toString(), access_token, openid);
                String userResult = HttpClientUtils.get(userInfoUrl);
                JSONObject userObject = JSONObject.parseObject(userResult);
                if(userObject.getString("errcode") != null){
                    log.error("获取用户信息失败：" + userObject.getString("errcode") + userObject.getString("errmsg"));
                    throw new YyghException(ResultCodeEnum.FETCH_USERINFO_ERROR);
                }
                System.out.println(userResult);
                //会获取昵称和头像
                String nickname = userObject.getString("nickname");
                String headimgurl = userObject.getString("headimgurl");
                userInfo = new UserInfo();
                userInfo.setOpenid(openid);
                userInfo.setNickName(nickname);
                userInfo.setStatus(1);
                userInfoService.save(userInfo);
            }
            Map<String, Object> map = new HashMap<>();
            String name = userInfo.getName();
            if(StringUtils.isEmpty(name)) {
                name = userInfo.getNickName();
            }
            if(StringUtils.isEmpty(name)) {
                name = userInfo.getPhone();
            }
            map.put("name", name);
            if(StringUtils.isEmpty(userInfo.getPhone())) {
                map.put("openid", userInfo.getOpenid());
            } else {
                map.put("openid", "");
            }
            String token = JwtHelper.createToken(userInfo.getId(), name);
            map.put("token", token);
            return "redirect:" + ConstantPropertiesUtil.YYGH_BASE_URL + "/weixin/callback?token="+map.get("token")+"&openid="+map.get("openid")+"&name="+URLEncoder.encode((String)map.get("name"),"UTF-8");
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }

    }
}
